innodb.innodb_buffer_pool_resize_with_chunks failed with InnoDB: Failing assertion: my_atomic_load32_explicit(&lock->lock_word, MY_MEMORY_ORDER_RELAXED) == X_LOCK_DECR

innodb.innodb_buffer_pool_resize_with_chunks 'innodb' w1 [ fail ]

        Test ended at 2018-07-03 02:04:21

CURRENT_TEST: innodb.innodb_buffer_pool_resize_with_chunks

mysqltest: In included file "./include/wait_condition.inc": 

included from /mnt/buildbot/build/mariadb-10.3.8/mysql-test/suite/innodb/t/innodb_buffer_pool_resize_with_chunks.test at line 54:

At line 54: query 'let $success= `$wait_condition`' failed with wrong errno 2013: 'Lost connection to MySQL server during query', instead of 0...

The result from queries just before the failure was:

< snip >

create table t1 (id int not null, val int not null default '0', primary key (id)) ENGINE=InnoDB ROW_FORMAT=COMPRESSED;

create or replace view view0 as select 1 union all select 1;

set @`v_id` := 0;

set @`v_val` := 0;

replace into t1 select (@`v_id` := (@`v_id` + 4) mod 4294967296) as id, (@`v_val` := (@`v_val` + 4) mod 4294967296) as val from view0 v0, view0 v1, view0 v2, view0 v3, view0 v4, view0 v5, view0 v6, view0 v7, view0 v8, view0 v9, view0 v10, view0 v11, view0 v12, view0 v13, view0 v14, view0 v15, view0 v16, view0 v17;

set global innodb_buffer_pool_size = 7340032;

Warnings:

Warning	1292	Truncated incorrect innodb_buffer_pool_size value: '7340032'

select count(val) from t1;

count(val)

262144

set global innodb_buffer_pool_size = 16777216;

select count(val) from t1;

count(val)

262144

drop table t1;

drop view view0;

set global innodb_buffer_pool_size = 1048576;

Warnings:

Warning	1292	Truncated incorrect innodb_buffer_pool_size value: '1048576'

More results from queries before failure can be found in /mnt/buildbot/build/mariadb-10.3.8/mysql-test/var/1/log/innodb_buffer_pool_resize_with_chunks.log

Server [mysqld.1 - pid: 31412, winpid: 31412, exit: 256] failed during test run

Server log from this test:

----------SERVER LOG START-----------

2018-07-03  2:02:32 0 [Note] /mnt/buildbot/build/mariadb-10.3.8/sql/mysqld (mysqld 10.3.8-MariaDB-debug-log) starting as process 31413 ...

2018-07-03  2:02:32 0 [Warning] Could not increase number of max_open_files to more than 1024 (request: 4182)

2018-07-03  2:02:32 0 [Warning] Changed limits: max_open_files: 1024  max_connections: 151 (was 151)  table_cache: 421 (was 2000)

2018-07-03  2:02:32 0 [Note] Plugin 'partition' is disabled.

2018-07-03  2:02:32 0 [Note] InnoDB: innodb_page_size=4096

2018-07-03  2:02:32 0 [Note] InnoDB: Using Linux native AIO

2018-07-03  2:02:32 0 [Note] InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!

2018-07-03  2:02:32 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2018-07-03  2:02:32 0 [Note] InnoDB: Uses event mutexes

2018-07-03  2:02:32 0 [Note] InnoDB: Compressed tables use zlib 1.2.8

2018-07-03  2:02:32 0 [Note] InnoDB: Number of pools: 1

2018-07-03  2:02:32 0 [Note] InnoDB: Using generic crc32 instructions

2018-07-03  2:02:33 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 2M

2018-07-03  2:02:33 0 [Note] InnoDB: Completed initialization of buffer pool

2018-07-03  2:02:33 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().

2018-07-03  2:02:33 0 [Note] InnoDB: 128 out of 128 rollback segments are active.

2018-07-03  2:02:33 0 [Note] InnoDB: Creating shared tablespace for temporary tables

2018-07-03  2:02:33 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...

2018-07-03  2:02:33 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.

2018-07-03  2:02:33 0 [Note] InnoDB: 10.3.8 started; log sequence number 744989; transaction id 34

2018-07-03  2:02:33 0 [Note] InnoDB: Loading buffer pool(s) from /mnt/buildbot/build/mariadb-10.3.8/mysql-test/var/1/mysqld.1/data/ib_buffer_pool

2018-07-03  2:02:33 0 [Note] Plugin 'SEQUENCE' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_SYS_DATAFILES' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_SYS_TABLESTATS' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_TABLESPACES_SCRUBBING' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_CMP' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_FT_DELETED' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_CMP_RESET' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_TABLESPACES_ENCRYPTION' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_CMPMEM_RESET' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'FEEDBACK' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_FT_INDEX_TABLE' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_CMP_PER_INDEX_RESET' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'user_variables' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_FT_INDEX_CACHE' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_FT_BEING_DELETED' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_FT_DEFAULT_STOPWORD' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_FT_CONFIG' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_SYS_TABLESPACES' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_MUTEXES' is disabled.

2018-07-03  2:02:33 0 [Note] Plugin 'INNODB_SYS_SEMAPHORE_WAITS' is disabled.

2018-07-03  2:02:33 0 [Warning] /mnt/buildbot/build/mariadb-10.3.8/sql/mysqld: unknown option '--loose-pam-debug'

2018-07-03  2:02:33 0 [Note] InnoDB: Buffer pool(s) load completed at 180703  2:02:33

2018-07-03  2:02:33 0 [Note] Server socket created on IP: '127.0.0.1'.

2018-07-03  2:02:33 0 [Note] Reading of all Master_info entries succeded

2018-07-03  2:02:33 0 [Note] Added new Master_info '' to hash table

2018-07-03  2:02:33 0 [Note] /mnt/buildbot/build/mariadb-10.3.8/sql/mysqld: ready for connections.

Version: '10.3.8-MariaDB-debug-log'  socket: '/mnt/buildbot/build/mariadb-10.3.8/mysql-test/var/tmp/1/mysqld.1.sock'  port: 16000  Source distribution

2018-07-03  2:03:47 9 [Note] InnoDB: Requested to resize buffer pool. (new size: 8388608 bytes)

2018-07-03  2:03:47 0 [Note] InnoDB: Resizing buffer pool from 16777216 to 8388608 (unit=2097152).

2018-07-03  2:03:47 0 [Note] InnoDB: Disabling adaptive hash index.

2018-07-03  2:03:47 0 [Note] InnoDB: disabled adaptive hash index.

2018-07-03  2:03:47 0 [Note] InnoDB: Withdrawing blocks to be shrunken.

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : start to withdraw the last 2048 blocks.

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : withdrawing blocks. (1829/2048)

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : withdrew 32 blocks from free list. Tried to relocate 1623 pages (1829/2048).

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : withdrawing blocks. (2048/2048)

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : withdrew 0 blocks from free list. Tried to relocate 65 pages (2048/2048).

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : withdrawn target 2048 blocks.

2018-07-03  2:03:47 0 [Note] InnoDB: Latching whole of buffer pool.

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : resizing with chunks 8 to 4.

2018-07-03  2:03:47 0 [Note] InnoDB: buffer pool 0 : 4 chunks (2048 blocks) were freed.

2018-07-03  2:03:47 0 [Note] InnoDB: Completed to resize buffer pool from 16777216 to 8388608.

2018-07-03  2:03:47 0 [Note] InnoDB: Re-enabled adaptive hash index.

2018-07-03  2:03:47 0 [Note] InnoDB: Completed resizing buffer pool at 180703  2:03:47.

2018-07-03  2:03:56 9 [Note] InnoDB: Requested to resize buffer pool. (new size: 16777216 bytes)

2018-07-03  2:03:56 0 [Note] InnoDB: Resizing buffer pool from 8388608 to 16777216 (unit=2097152).

2018-07-03  2:03:56 0 [Note] InnoDB: Disabling adaptive hash index.

2018-07-03  2:03:56 0 [Note] InnoDB: disabled adaptive hash index.

2018-07-03  2:03:56 0 [Note] InnoDB: Withdrawing blocks to be shrunken.

2018-07-03  2:03:56 0 [Note] InnoDB: Latching whole of buffer pool.

2018-07-03  2:03:56 0 [Note] InnoDB: buffer pool 0 : resizing with chunks 4 to 8.

2018-07-03  2:03:56 0 [Note] InnoDB: buffer pool 0 : 4 chunks (2048 blocks) were added.

2018-07-03  2:03:56 0 [Note] InnoDB: Completed to resize buffer pool from 8388608 to 16777216.

2018-07-03  2:03:56 0 [Note] InnoDB: Re-enabled adaptive hash index.

2018-07-03  2:03:56 0 [Note] InnoDB: Completed resizing buffer pool at 180703  2:03:56.

2018-07-03  2:04:07 9 [Note] InnoDB: Requested to resize buffer pool. (new size: 6291456 bytes)

2018-07-03  2:04:07 0 [Note] InnoDB: Resizing buffer pool from 16777216 to 6291456 (unit=2097152).

2018-07-03  2:04:07 0 [Note] InnoDB: Disabling adaptive hash index.

2018-07-03  2:04:07 0 [Note] InnoDB: disabled adaptive hash index.

2018-07-03  2:04:07 0 [Note] InnoDB: Withdrawing blocks to be shrunken.

2018-07-03  2:04:07 0 [Note] InnoDB: buffer pool 0 : start to withdraw the last 2560 blocks.

2018-07-03  2:04:07 0 [Note] InnoDB: buffer pool 0 : withdrawing blocks. (2524/2560)

2018-07-03  2:04:07 0 [Note] InnoDB: buffer pool 0 : withdrew 186 blocks from free list. Tried to relocate 502 pages (2524/2560).

2018-07-03  2:04:07 0 [Note] InnoDB: buffer pool 0 : withdrawing blocks. (2560/2560)

2018-07-03  2:04:07 0 [Note] InnoDB: buffer pool 0 : withdrew 0 blocks from free list. Tried to relocate 36 pages (2560/2560).

2018-07-03  2:04:07 0 [Note] InnoDB: buffer pool 0 : withdrawn target 2560 blocks.

2018-07-03  2:04:07 0 [Note] InnoDB: Latching whole of buffer pool.

2018-07-03  2:04:07 0 [Note] InnoDB: buffer pool 0 : resizing with chunks 8 to 3.

2018-07-03 02:04:07 0xa53fbb40  InnoDB: Assertion failure in file /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc line 270

InnoDB: Failing assertion: my_atomic_load32_explicit(&lock->lock_word, MY_MEMORY_ORDER_RELAXED) == X_LOCK_DECR

InnoDB: We intentionally generate a memory trap.

InnoDB: Submit a detailed bug report to https://jira.mariadb.org/

InnoDB: If you get repeated assertion failures or crashes, even

InnoDB: immediately after the mysqld startup, there may be

InnoDB: corruption in the InnoDB tablespace. Please refer to

InnoDB: https://mariadb.com/kb/en/library/xtradbinnodb-recovery-modes/

InnoDB: about forcing recovery.

180703  2:04:07 [ERROR] mysqld got signal 6 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed, 

something is definitely wrong and this may fail.

Server version: 10.3.8-MariaDB-debug-log

key_buffer_size=1048576

read_buffer_size=131072

max_used_connections=1

max_threads=153

thread_count=7

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 61982 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0

Attempting backtrace. You can use the following information to find out

where mysqld died. If you see no messages after this, something went

terribly wrong...

stack_bottom = 0x0 thread_stack 0x49000

/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld(my_print_stacktrace+0x3c)[0x80f69eb4]

/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld(handle_fatal_signal+0x3d9)[0x807f54a2]

addr2line: '': No such file

[0xb77abc14]

[0xb77abc31]

/lib/i386-linux-gnu/libc.so.6(gsignal+0x39)[0xb7089e89]

/lib/i386-linux-gnu/libc.so.6(abort+0x157)[0xb708b3e7]

/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld(+0xc3bfe5)[0x80d25fe5]

/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld(+0xbe85df)[0x80cd25df]

/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld(+0xc95201)[0x80d7f201]

/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld(+0xca0bc1)[0x80d8abc1]

/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld(+0xca1c9f)[0x80d8bc9f]

/lib/i386-linux-gnu/libpthread.so.0(+0x62b5)[0xb74042b5]

/lib/i386-linux-gnu/libc.so.6(clone+0x6e)[0xb714516e]

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains

information that should help you find out what is causing the crash.

Writing a core file at /mnt/buildbot/build/mariadb-10.3.8/mysql-test/var/1/mysqld.1/data/

----------SERVER LOG END-------------

 - found 'core' (0/0)

Trying 'dbx' to get a backtrace

Trying 'gdb' to get a backtrace from coredump /mnt/buildbot/build/mariadb-10.3.8/mysql-test/var/1/log/innodb.innodb_buffer_pool_resize_with_chunks-innodb/mysqld.1/data/core

Core generated by '/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld'

Output from gdb follows. The first stack trace is from the failing thread.

The following stack traces are from all threads (so the failing one is

duplicated).

--------------------------

[New LWP 31460]

[New LWP 31435]

[New LWP 31434]

[New LWP 31437]

[New LWP 31440]

[New LWP 31464]

[New LWP 31429]

[New LWP 31413]

[New LWP 31443]

[New LWP 31426]

[New LWP 31467]

[New LWP 31456]

[New LWP 31444]

[New LWP 31461]

[New LWP 31453]

[New LWP 31445]

[New LWP 31472]

[New LWP 31459]

[New LWP 31455]

[New LWP 31458]

[New LWP 31457]

[New LWP 31454]

[New LWP 31446]

[New LWP 31442]

[New LWP 31439]

[New LWP 31438]

[New LWP 31436]

[Thread debugging using libthread_db enabled]

Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

Core was generated by `/mnt/buildbot/build/mariadb-10.3.8/sql/mysqld --defaults-group-suffix=.1 --defa'.

Program terminated with signal SIGABRT, Aborted.

#0  0xb77abc31 in __kernel_vsyscall ()

[Current thread is 1 (Thread 0xa53fbb40 (LWP 31460))]

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb740ace1 in pthread_kill () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80f69fae in my_write_core (sig=6) at /home/buildbot/buildbot/build/mariadb-10.3.8/mysys/stacktrace.c:481

#3  0x807f58f1 in handle_fatal_signal (sig=6) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/signal_handler.cc:305

#4  <signal handler called>

#5  0xb77abc31 in __kernel_vsyscall ()

#6  0xb7089e89 in raise () from /lib/i386-linux-gnu/libc.so.6

#7  0xb708b3e7 in abort () from /lib/i386-linux-gnu/libc.so.6

#8  0x80d25fe5 in ut_dbg_assertion_failed (expr=0x812b4354 "my_atomic_load32_explicit(&lock->lock_word, MY_MEMORY_ORDER_RELAXED) == X_LOCK_DECR", file=0x812b4268 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc", line=270) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/ut/ut0dbg.cc:61

#9  0x80cd25df in rw_lock_free_func (lock=0xa3bd0acc) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc:269

#10 0x80d7f201 in pfs_rw_lock_free_func (lock=0xa3bd0acc) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/sync0rw.ic:627

#11 0x80d8abc1 in buf_pool_resize () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc:2997

#12 0x80d8bc9f in buf_resize_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc:3279

#13 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#14 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 27 (Thread 0xae53cb40 (LWP 31436)):

#0  0xb7777570 in ?? () from /lib/i386-linux-gnu/libaio.so.1

#1  0xb77775e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1

#2  0x80bbfa27 in LinuxAIOHandler::collect (this=0xae53c0e0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:1933

#3  0x80bbff81 in LinuxAIOHandler::poll (this=0xae53c0e0, m1=0xae53c150, m2=0xae53c154, request=0xae53c178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2078

#4  0x80bc00e5 in os_aio_linux_handler (global_segment=2, m1=0xae53c150, m2=0xae53c154, request=0xae53c178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2132

#5  0x80bc5086 in os_aio_handler (segment=2, m1=0xae53c150, m2=0xae53c154, request=0xae53c178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:5658

#6  0x80e249ce in fil_aio_wait (segment=2) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/fil/fil0fil.cc:4559

#7  0x80cc602b in io_handler_thread (arg=0x821d0a68 <n+8>) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0start.cc:331

#8  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#9  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 26 (Thread 0xad53ab40 (LWP 31438)):

#0  0xb7777570 in ?? () from /lib/i386-linux-gnu/libaio.so.1

#1  0xb77775e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1

#2  0x80bbfa27 in LinuxAIOHandler::collect (this=0xad53a0e0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:1933

#3  0x80bbff81 in LinuxAIOHandler::poll (this=0xad53a0e0, m1=0xad53a150, m2=0xad53a154, request=0xad53a178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2078

#4  0x80bc00e5 in os_aio_linux_handler (global_segment=4, m1=0xad53a150, m2=0xad53a154, request=0xad53a178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2132

#5  0x80bc5086 in os_aio_handler (segment=4, m1=0xad53a150, m2=0xad53a154, request=0xad53a178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:5658

#6  0x80e249ce in fil_aio_wait (segment=4) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/fil/fil0fil.cc:4559

#7  0x80cc602b in io_handler_thread (arg=0x821d0a70 <n+16>) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0start.cc:331

#8  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#9  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 25 (Thread 0xacd39b40 (LWP 31439)):

#0  0xb7777570 in ?? () from /lib/i386-linux-gnu/libaio.so.1

#1  0xb77775e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1

#2  0x80bbfa27 in LinuxAIOHandler::collect (this=0xacd390e0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:1933

#3  0x80bbff81 in LinuxAIOHandler::poll (this=0xacd390e0, m1=0xacd39150, m2=0xacd39154, request=0xacd39178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2078

#4  0x80bc00e5 in os_aio_linux_handler (global_segment=5, m1=0xacd39150, m2=0xacd39154, request=0xacd39178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2132

#5  0x80bc5086 in os_aio_handler (segment=5, m1=0xacd39150, m2=0xacd39154, request=0xacd39178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:5658

#6  0x80e249ce in fil_aio_wait (segment=5) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/fil/fil0fil.cc:4559

#7  0x80cc602b in io_handler_thread (arg=0x821d0a74 <n+20>) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0start.cc:331

#8  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#9  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 24 (Thread 0xab1fcb40 (LWP 31442)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcce12 in os_event::timed_wait (this=0x84650008, abstime=0xab1fc220) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:283

#3  0x80bcd168 in os_event::wait_time_low (this=0x84650008, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:405

#4  0x80bcd374 in os_event_wait_time_low (event=0x84650008, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:505

#5  0x80b97f61 in lock_wait_timeout_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/lock/lock0wait.cc:543

#6  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#7  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 23 (Thread 0xa91f8b40 (LWP 31446)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcce12 in os_event::timed_wait (this=0x84625000, abstime=0xa91f8100) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:283

#3  0x80bcd168 in os_event::wait_time_low (this=0x84625000, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:405

#4  0x80bcd374 in os_event_wait_time_low (event=0x84625000, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:505

#5  0x80d295dc in ib_wqueue_timedwait (wq=0x84624f40, wait_in_usecs=5000000) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/ut/ut0wqueue.cc:163

#6  0x80e68b12 in fts_optimize_thread (arg=0x84624f40) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/fts/fts0opt.cc:3035

#7  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#8  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 22 (Thread 0xa87ffb40 (LWP 31454)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x846af978) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x846af978, reset_sig_count=476) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x846af978, reset_sig_count=476) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xa87fef98: 0x8432b5a8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80b23d7e in TTASEventMutex<GenericPolicy>::enter (this=0x846af8e0, max_spins=180, max_delay=4, filename=0x8130e570 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc", line=999) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:471

#7  0x80b22222 in PolicyMutex<TTASEventMutex<GenericPolicy> >::enter (this=0x846af8e0, n_spins=30, n_delay=4, name=0x8130e570 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc", line=999) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:592

#8  0x80dd6479 in dict_table_open_on_id (table_id=20, dict_locked=0, table_op=DICT_TABLE_OP_NORMAL) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc:999

#9  0x80c750e3 in row_purge_parse_undo_rec (node=0x846c6d88, undo_rec=0xa7433440 "", updated_extern=0xa87ff10e, thr=0x846c6d20) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:932

#10 0x80c758b9 in row_purge (node=0x846c6d88, undo_rec=0xa7433440 "", thr=0x846c6d20) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1104

#11 0x80c75bad in row_purge_step (thr=0x846c6d20) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1186

#12 0x80bfe40c in que_thr_step (thr=0x846c6d20) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1046

#13 0x80bfe651 in que_run_threads_low (thr=0x846c6d20) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1108

#14 0x80bfe853 in que_run_threads (thr=0x846c6d20) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1148

#15 0x80cf35c8 in trx_purge (n_purge_threads=4, truncate=false) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/trx/trx0purge.cc:1571

#16 0x80cc3577 in srv_do_purge (n_total_purged=0xa87ff280) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2583

#17 0x80cc39db in srv_purge_coordinator_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2714

#18 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#19 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 21 (Thread 0xa6bfeb40 (LWP 31457)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x846af978) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x846af978, reset_sig_count=476) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x846af978, reset_sig_count=476) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xa6bfe018: 0x8432b584) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80b23d7e in TTASEventMutex<GenericPolicy>::enter (this=0x846af8e0, max_spins=90, max_delay=4, filename=0x8130e570 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc", line=999) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:471

#7  0x80b22222 in PolicyMutex<TTASEventMutex<GenericPolicy> >::enter (this=0x846af8e0, n_spins=30, n_delay=4, name=0x8130e570 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc", line=999) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:592

#8  0x80dd6479 in dict_table_open_on_id (table_id=20, dict_locked=0, table_op=DICT_TABLE_OP_NORMAL) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc:999

#9  0x80c750e3 in row_purge_parse_undo_rec (node=0x846c6c30, undo_rec=0xa742b578 "", updated_extern=0xa6bfe18e, thr=0x846c6bc8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:932

#10 0x80c758b9 in row_purge (node=0x846c6c30, undo_rec=0xa742b578 "", thr=0x846c6bc8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1104

#11 0x80c75bad in row_purge_step (thr=0x846c6bc8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1186

#12 0x80bfe40c in que_thr_step (thr=0x846c6bc8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1046

#13 0x80bfe651 in que_run_threads_low (thr=0x846c6bc8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1108

#14 0x80bfe853 in que_run_threads (thr=0x846c6bc8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1148

#15 0x80cc30df in srv_task_execute () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2437

#16 0x80cc329d in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2485

#17 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#18 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 20 (Thread 0xa63fdb40 (LWP 31458)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x8434fb88) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x8434fb88, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x8434fb88, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80da272c in buf_dump_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0dump.cc:837

#6  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#7  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 19 (Thread 0xa7dffb40 (LWP 31455)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x846af978) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x846af978, reset_sig_count=476) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x846af978, reset_sig_count=476) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xa7dff018: 0x8432b638) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80b23d7e in TTASEventMutex<GenericPolicy>::enter (this=0x846af8e0, max_spins=90, max_delay=4, filename=0x8130e570 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc", line=999) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:471

#7  0x80b22222 in PolicyMutex<TTASEventMutex<GenericPolicy> >::enter (this=0x846af8e0, n_spins=30, n_delay=4, name=0x8130e570 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc", line=999) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:592

#8  0x80dd6479 in dict_table_open_on_id (table_id=20, dict_locked=0, table_op=DICT_TABLE_OP_NORMAL) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc:999

#9  0x80c750e3 in row_purge_parse_undo_rec (node=0x846c67a0, undo_rec=0xa7420b38 "", updated_extern=0xa7dff18e, thr=0x846c6738) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:932

#10 0x80c758b9 in row_purge (node=0x846c67a0, undo_rec=0xa7420b38 "", thr=0x846c6738) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1104

#11 0x80c75bad in row_purge_step (thr=0x846c6738) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1186

#12 0x80bfe40c in que_thr_step (thr=0x846c6738) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1046

#13 0x80bfe651 in que_run_threads_low (thr=0x846c6738) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1108

#14 0x80bfe853 in que_run_threads (thr=0x846c6738) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1148

#15 0x80cc30df in srv_task_execute () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2437

#16 0x80cc329d in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2485

#17 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#18 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 18 (Thread 0xa5bfcb40 (LWP 31459)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb740d8aa in nanosleep () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcda05 in os_thread_sleep (tm=1000000) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0thread.cc:230

#3  0x80d7d455 in btr_defragment_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/btr/btr0defragment.cc:705

#4  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#5  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 17 (Thread 0xaf5b5b40 (LWP 31472)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x843d7e70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x843d7e70, reset_sig_count=900) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x843d7e70, reset_sig_count=900) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xaf5b31d8: 0x8432b5cc) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80b23d7e in TTASEventMutex<GenericPolicy>::enter (this=0x843d7ae8, max_spins=60, max_delay=4, filename=0x812f3494 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc", line=6853) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:471

#7  0x80b22222 in PolicyMutex<TTASEventMutex<GenericPolicy> >::enter (this=0x843d7ae8, n_spins=30, n_delay=4, name=0x812f3494 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc", line=6853) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:592

#8  0x80d973f1 in buf_get_latched_pages_number_instance (buf_pool=0x843d7ae8) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc:6853

#9  0x80d9779f in buf_get_latched_pages_number () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc:6946

#10 0x80cc0a52 in srv_export_innodb_status () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:1505

#11 0x80b14d99 in innodb_export_status () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/handler/ha_innodb.cc:15728

#12 0x80b19456 in show_innodb_vars (var=0xaf5b33fc) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/handler/ha_innodb.cc:18347

#13 0x805b5d7a in show_status_array (thd=0x8478b498, wild=0x0, variables=0x842333d0, scope=SHOW_OPT_GLOBAL, status_var=0xaf5b38e8, prefix=0x8103b923 "", table=0x848b05c8, ucase_names=true, cond=0x8479b800) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_show.cc:3718

#14 0x805c4f75 in fill_status (thd=0x8478b498, tables=0x8479b120, cond=0x8479b800) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_show.cc:7799

#15 0x805c7d90 in get_schema_tables_result (join=0x8479bba8, executed_place=PROCESSED_BY_JOIN_EXEC) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_show.cc:8768

#16 0x805682ca in JOIN::exec_inner (this=0x8479bba8) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_select.cc:3984

#17 0x805678c9 in JOIN::exec (this=0x8479bba8) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_select.cc:3815

#18 0x80568bed in mysql_select (thd=0x8478b498, tables=0x8479b120, wild_num=0, fields=..., conds=0x8479b800, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2684619520, result=0x8479bb98, unit=0x8478dbf4, select_lex=0x8478e0fc) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_select.cc:4220

#19 0x8055c17a in handle_select (thd=0x8478b498, lex=0x8478db80, result=0x8479bb98, setup_tables_done_option=0) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_select.cc:382

#20 0x8052a245 in execute_sqlcom_select (thd=0x8478b498, all_tables=0x8479b120) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_parse.cc:6542

#21 0x8051f75b in mysql_execute_command (thd=0x8478b498) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_parse.cc:3765

#22 0x8052da17 in mysql_parse (thd=0x8478b498, rawbuf=0x8479a9e8 "SELECT SUBSTR(variable_value, 1, 34) = 'Completed resizing buffer pool at '\n  FROM information_schema.global_status\nWHERE LOWER(variable_name) = 'innodb_buffer_pool_resize_status'", length=179, parser_state=0xaf5b4b94, is_com_multi=false, is_next_command=false) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_parse.cc:8073

#23 0x80519d69 in dispatch_command (command=COM_QUERY, thd=0x8478b498, packet=0x847919f9 "SELECT SUBSTR(variable_value, 1, 34) = 'Completed resizing buffer pool at '\n  FROM information_schema.global_status\nWHERE LOWER(variable_name) = 'innodb_buffer_pool_resize_status'", packet_length=179, is_com_multi=false, is_next_command=false) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_parse.cc:1847

#24 0x80518668 in do_command (thd=0x8478b498) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_parse.cc:1392

#25 0x8066b080 in do_handle_one_connection (connect=0x84779340) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_connect.cc:1402

#26 0x8066adcd in handle_one_connection (arg=0x84779340) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/sql_connect.cc:1308

#27 0x80a0b2dc in pfs_spawn_thread (arg=0x8473c670) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/perfschema/pfs.cc:1862

#28 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#29 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 16 (Thread 0xa99f9b40 (LWP 31445)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcce12 in os_event::timed_wait (this=0x846af4c0, abstime=0xa99f9240) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:283

#3  0x80bcd168 in os_event::wait_time_low (this=0x846af4c0, time_in_usec=10000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:405

#4  0x80bcd374 in os_event_wait_time_low (event=0x846af4c0, time_in_usec=10000000, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:505

#5  0x80e0df33 in dict_stats_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0stats_bg.cc:449

#6  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#7  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 15 (Thread 0xab9fdb40 (LWP 31453)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x846afac0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x846afac0, reset_sig_count=18) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x846afac0, reset_sig_count=18) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xab9fd0d8: 0x8432b65c) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80cd2a83 in rw_lock_x_lock_wait_func (lock=0x846af878, pass=0, threshold=0, file_name=0x812ae2d4 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc", line=2015) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc:470

#7  0x80cd2be2 in rw_lock_x_lock_low (lock=0x846af878, pass=0, file_name=0x812ae2d4 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc", line=2015) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc:533

#8  0x80cd2f87 in rw_lock_x_lock_func (lock=0x846af878, pass=0, file_name=0x812ae2d4 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc", line=2015) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc:693

#9  0x80cbea5c in pfs_rw_lock_x_lock_func (lock=0x846af878, pass=0, file_name=0x812ae2d4 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc", line=2015) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/sync0rw.ic:562

#10 0x80cc1c04 in srv_master_evict_from_table_cache (pct_check=100) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2015

#11 0x80cc27a1 in srv_master_do_idle_tasks () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2253

#12 0x80cc2de9 in srv_master_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2374

#13 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#14 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 14 (Thread 0xa4bfab40 (LWP 31461)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80f6ebfd in safe_cond_wait (cond=0xa4bfa1c4, mp=0xa4bfa1f8, file=0x8120db20 "/home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h", line=1178) at /home/buildbot/buildbot/build/mariadb-10.3.8/mysys/thr_mutex.c:492

#3  0x80af371b in inline_mysql_cond_wait (that=0xa4bfa1c4, mutex=0xa4bfa1f8, src_file=0x8120f5f8 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/handler/ha_innodb.cc", src_line=311) at /home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h:1178

#4  0x80af7f9e in thd_destructor_proxy () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/handler/ha_innodb.cc:311

#5  0x80a0b2dc in pfs_spawn_thread (arg=0x8463ca58) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/perfschema/pfs.cc:1862

#6  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#7  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 13 (Thread 0xaa1fab40 (LWP 31444)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x8434f720) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x8434f720, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x8434f720, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xaa1fa1a8: 0x8432b560) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80b23d7e in TTASEventMutex<GenericPolicy>::enter (this=0x821cea00 <srv_innodb_monitor_mutex>, max_spins=60, max_delay=4, filename=0x812ae2d4 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc", line=1137) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:471

#7  0x80b22222 in PolicyMutex<TTASEventMutex<GenericPolicy> >::enter (this=0x821cea00 <srv_innodb_monitor_mutex>, n_spins=30, n_delay=4, name=0x812ae2d4 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc", line=1137) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:592

#8  0x80cbfda4 in srv_refresh_innodb_monitor_stats () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:1137

#9  0x80cc12df in srv_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:1741

#10 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#11 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 12 (Thread 0xa73ffb40 (LWP 31456)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x845c1290) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x845c1290, reset_sig_count=38) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x845c1290, reset_sig_count=38) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xa73fdf38: 0x8432b5f0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80cd28dd in rw_lock_s_lock_spin (lock=0x845c0b68, pass=0, file_name=0x812f3494 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc", line=4416) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc:389

#7  0x80d7e970 in rw_lock_s_lock_func (lock=0x845c0b68, pass=0, file_name=0x812f3494 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc", line=4416) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/sync0rw.ic:289

#8  0x80d7f263 in pfs_rw_lock_s_lock_func (lock=0x845c0b68, pass=0, file_name=0x812f3494 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc", line=4416) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/sync0rw.ic:655

#9  0x80d8f751 in buf_page_get_gen (page_id=..., page_size=..., rw_latch=1, guess=0x0, mode=10, file=0x81315ad8 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0load.cc", line=3147, mtr=0xa73febc4, err=0xa73fe1d0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc:4416

#10 0x80d52dcc in btr_cur_search_to_nth_level_func (index=0x846b1fa0, level=0, tuple=0xa40d7c70, mode=PAGE_CUR_GE, latch_mode=1, cursor=0xa73feb38, ahi_latch=0x0, file=0x81315ad8 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0load.cc", line=3147, mtr=0xa73febc4, autoinc=0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/btr/btr0cur.cc:1299

#11 0x80d68de1 in btr_pcur_open_low (index=0x846b1fa0, level=0, tuple=0xa40d7c70, mode=PAGE_CUR_GE, latch_mode=1, cursor=0xa73feb38, file=0x81315ad8 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0load.cc", line=3147, autoinc=0, mtr=0xa73febc4) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/btr0pcur.ic:433

#12 0x80d6a74d in btr_pcur_open_on_user_rec_func (index=0x846b1fa0, tuple=0xa40d7c70, mode=PAGE_CUR_GE, latch_mode=1, cursor=0xa73feb38, file=0x81315ad8 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0load.cc", line=3147, mtr=0xa73febc4) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/btr/btr0pcur.cc:605

#13 0x80df60ae in dict_load_table_on_id (table_id=20, ignore_err=DICT_ERR_IGNORE_NONE) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0load.cc:3147

#14 0x80dd3f17 in dict_table_open_on_id_low (table_id=20, ignore_err=DICT_ERR_IGNORE_NONE, open_only_if_in_cache=0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/dict0priv.ic:90

#15 0x80dd64f8 in dict_table_open_on_id (table_id=20, dict_locked=0, table_op=DICT_TABLE_OP_NORMAL) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/dict/dict0dict.cc:1009

#16 0x80c750e3 in row_purge_parse_undo_rec (node=0x846c6ad8, undo_rec=0xa742e380 "", updated_extern=0xa73ff18e, thr=0x846c6a70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:932

#17 0x80c758b9 in row_purge (node=0x846c6ad8, undo_rec=0xa742e380 "", thr=0x846c6a70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1104

#18 0x80c75bad in row_purge_step (thr=0x846c6a70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/row/row0purge.cc:1186

#19 0x80bfe40c in que_thr_step (thr=0x846c6a70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1046

#20 0x80bfe651 in que_run_threads_low (thr=0x846c6a70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1108

#21 0x80bfe853 in que_run_threads (thr=0x846c6a70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/que/que0que.cc:1148

#22 0x80cc30df in srv_task_execute () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2437

#23 0x80cc329d in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:2485

#24 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#25 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 11 (Thread 0xaf5ffb40 (LWP 31467)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80f6ebfd in safe_cond_wait (cond=0x81971aa0 <COND_slave_background>, mp=0x819741c0 <LOCK_slave_background>, file=0x81002aa0 "/home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h", line=1167) at /home/buildbot/buildbot/build/mariadb-10.3.8/mysys/thr_mutex.c:492

#3  0x804316ab in inline_mysql_cond_wait (that=0x81971aa0 <COND_slave_background>, mutex=0x819741c0 <LOCK_slave_background>, src_file=0x810036e0 "/home/buildbot/buildbot/build/mariadb-10.3.8/sql/slave.cc", src_line=513) at /home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h:1167

#4  0x80432ba2 in handle_slave_background (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/slave.cc:513

#5  0x80a0b2dc in pfs_spawn_thread (arg=0x84746840) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/perfschema/pfs.cc:1862

#6  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#7  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 10 (Thread 0xb2c85b40 (LWP 31426)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80f6eea8 in safe_cond_timedwait (cond=0x821e53e0 <COND_timer>, mp=0x821e5360 <LOCK_timer>, abstime=0xb2c85250, file=0x81376bdc "/home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h", line=1204) at /home/buildbot/buildbot/build/mariadb-10.3.8/mysys/thr_mutex.c:546

#3  0x80f6fdb5 in inline_mysql_cond_timedwait (that=0x821e53e0 <COND_timer>, mutex=0x821e5360 <LOCK_timer>, abstime=0xb2c85250, src_file=0x81376c2c "/home/buildbot/buildbot/build/mariadb-10.3.8/mysys/thr_timer.c", src_line=292) at /home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h:1204

#4  0x80f70925 in timer_handler (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/mysys/thr_timer.c:292

#5  0x80a0b2dc in pfs_spawn_thread (arg=0x8427b4b0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/perfschema/pfs.cc:1862

#6  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#7  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 9 (Thread 0xaa9fbb40 (LWP 31443)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcce12 in os_event::timed_wait (this=0x8434fac8, abstime=0xaa9fb120) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:283

#3  0x80bcd168 in os_event::wait_time_low (this=0x8434fac8, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:405

#4  0x80bcd374 in os_event_wait_time_low (event=0x8434fac8, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:505

#5  0x80cc16e7 in srv_error_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0srv.cc:1853

#6  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#7  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 8 (Thread 0xb6ecb7c0 (LWP 31413)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb713af8f in poll () from /lib/i386-linux-gnu/libc.so.6

#2  0x8040c939 in handle_connections_sockets () at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/mysqld.cc:6710

#3  0x8040bc26 in mysqld_main (argc=149, argv=0x84139058) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/mysqld.cc:6179

#4  0x803ffb0b in main (argc=26, argv=0xbfb74204) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/main.cc:25

Thread 7 (Thread 0xb1861b40 (LWP 31429)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80f6eea8 in safe_cond_timedwait (cond=0x8219da60 <COND_checkpoint>, mp=0x8219d9e0 <LOCK_checkpoint>, abstime=0xb186119c, file=0x81200c44 "/home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h", line=1204) at /home/buildbot/buildbot/build/mariadb-10.3.8/mysys/thr_mutex.c:546

#3  0x80a6a17f in inline_mysql_cond_timedwait (that=0x8219da60 <COND_checkpoint>, mutex=0x8219d9e0 <LOCK_checkpoint>, abstime=0xb186119c, src_file=0x81200c94 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/maria/ma_servicethread.c", src_line=116) at /home/buildbot/buildbot/build/mariadb-10.3.8/include/mysql/psi/mysql_thread.h:1204

#4  0x80a6a6c2 in my_service_thread_sleep (control=0x817c4cb8 <checkpoint_control>, sleep_time=30000000000) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/maria/ma_servicethread.c:115

#5  0x80a5e8a9 in ma_checkpoint_background (arg=0x1e) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/maria/ma_checkpoint.c:707

#6  0x80a0b2dc in pfs_spawn_thread (arg=0x842a6fb0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/perfschema/pfs.cc:1862

#7  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#8  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 6 (Thread 0xb1050b40 (LWP 31464)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb740e1cd in do_sigwait () from /lib/i386-linux-gnu/libpthread.so.0

#2  0xb740e25e in sigwait () from /lib/i386-linux-gnu/libpthread.so.0

#3  0x8040617b in signal_hand (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/mysqld.cc:3553

#4  0x80a0b2dc in pfs_spawn_thread (arg=0x846ee400) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/perfschema/pfs.cc:1862

#5  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#6  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 5 (Thread 0xac538b40 (LWP 31440)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb7409a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80bcd656 in os_event::wait (this=0x843d7e70) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:163

#3  0x80bccfe5 in os_event::wait_low (this=0x843d7e70, reset_sig_count=900) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:333

#4  0x80bcd3a6 in os_event_wait_low (event=0x843d7e70, reset_sig_count=900) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0event.cc:522

#5  0x80ccfde6 in sync_array_wait_event (arr=0x8432b4e8, cell=@0xac537fd8: 0x8432b614) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0arr.cc:475

#6  0x80b23d7e in TTASEventMutex<GenericPolicy>::enter (this=0x843d7ae8, max_spins=60, max_delay=4, filename=0x812fd298 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0flu.cc", line=1928) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:471

#7  0x80b22222 in PolicyMutex<TTASEventMutex<GenericPolicy> >::enter (this=0x843d7ae8, n_spins=30, n_delay=4, name=0x812fd298 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0flu.cc", line=1928) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/ib0mutex.h:592

#8  0x80daa89b in buf_flush_start (buf_pool=0x843d7ae8, flush_type=BUF_FLUSH_LIST) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0flu.cc:1928

#9  0x80daac3c in buf_flush_do_batch (buf_pool=0x843d7ae8, type=BUF_FLUSH_LIST, min_n=200, lsn_limit=18446744073709551615, n=0xac538104) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0flu.cc:2038

#10 0x80daaf8d in buf_flush_lists (min_n=200, lsn_limit=18446744073709551615, n_processed=0xac538168) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0flu.cc:2144

#11 0x80daef98 in buf_flush_page_cleaner_coordinator () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0flu.cc:3300

#12 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#13 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xadd3bb40 (LWP 31437)):

#0  0xb7777570 in ?? () from /lib/i386-linux-gnu/libaio.so.1

#1  0xb77775e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1

#2  0x80bbfa27 in LinuxAIOHandler::collect (this=0xadd3b0e0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:1933

#3  0x80bbff81 in LinuxAIOHandler::poll (this=0xadd3b0e0, m1=0xadd3b150, m2=0xadd3b154, request=0xadd3b178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2078

#4  0x80bc00e5 in os_aio_linux_handler (global_segment=3, m1=0xadd3b150, m2=0xadd3b154, request=0xadd3b178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2132

#5  0x80bc5086 in os_aio_handler (segment=3, m1=0xadd3b150, m2=0xadd3b154, request=0xadd3b178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:5658

#6  0x80e249ce in fil_aio_wait (segment=3) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/fil/fil0fil.cc:4559

#7  0x80cc602b in io_handler_thread (arg=0x821d0a6c <n+12>) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0start.cc:331

#8  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#9  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xaf53eb40 (LWP 31434)):

#0  0xb7777570 in ?? () from /lib/i386-linux-gnu/libaio.so.1

#1  0xb77775e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1

#2  0x80bbfa27 in LinuxAIOHandler::collect (this=0xaf53e0e0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:1933

#3  0x80bbff81 in LinuxAIOHandler::poll (this=0xaf53e0e0, m1=0xaf53e150, m2=0xaf53e154, request=0xaf53e178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2078

#4  0x80bc00e5 in os_aio_linux_handler (global_segment=0, m1=0xaf53e150, m2=0xaf53e154, request=0xaf53e178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2132

#5  0x80bc5086 in os_aio_handler (segment=0, m1=0xaf53e150, m2=0xaf53e154, request=0xaf53e178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:5658

#6  0x80e249ce in fil_aio_wait (segment=0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/fil/fil0fil.cc:4559

#7  0x80cc602b in io_handler_thread (arg=0x821d0a60 <n>) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0start.cc:331

#8  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#9  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xaed3db40 (LWP 31435)):

#0  0xb7777570 in ?? () from /lib/i386-linux-gnu/libaio.so.1

#1  0xb77775e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1

#2  0x80bbfa27 in LinuxAIOHandler::collect (this=0xaed3d0e0) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:1933

#3  0x80bbff81 in LinuxAIOHandler::poll (this=0xaed3d0e0, m1=0xaed3d150, m2=0xaed3d154, request=0xaed3d178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2078

#4  0x80bc00e5 in os_aio_linux_handler (global_segment=1, m1=0xaed3d150, m2=0xaed3d154, request=0xaed3d178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:2132

#5  0x80bc5086 in os_aio_handler (segment=1, m1=0xaed3d150, m2=0xaed3d154, request=0xaed3d178) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/os/os0file.cc:5658

#6  0x80e249ce in fil_aio_wait (segment=1) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/fil/fil0fil.cc:4559

#7  0x80cc602b in io_handler_thread (arg=0x821d0a64 <n+4>) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/srv/srv0start.cc:331

#8  0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#9  0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xa53fbb40 (LWP 31460)):

#0  0xb77abc31 in __kernel_vsyscall ()

#1  0xb740ace1 in pthread_kill () from /lib/i386-linux-gnu/libpthread.so.0

#2  0x80f69fae in my_write_core (sig=6) at /home/buildbot/buildbot/build/mariadb-10.3.8/mysys/stacktrace.c:481

#3  0x807f58f1 in handle_fatal_signal (sig=6) at /home/buildbot/buildbot/build/mariadb-10.3.8/sql/signal_handler.cc:305

#4  <signal handler called>

#5  0xb77abc31 in __kernel_vsyscall ()

#6  0xb7089e89 in raise () from /lib/i386-linux-gnu/libc.so.6

#7  0xb708b3e7 in abort () from /lib/i386-linux-gnu/libc.so.6

#8  0x80d25fe5 in ut_dbg_assertion_failed (expr=0x812b4354 "my_atomic_load32_explicit(&lock->lock_word, MY_MEMORY_ORDER_RELAXED) == X_LOCK_DECR", file=0x812b4268 "/home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc", line=270) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/ut/ut0dbg.cc:61

#9  0x80cd25df in rw_lock_free_func (lock=0xa3bd0acc) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/sync/sync0rw.cc:269

#10 0x80d7f201 in pfs_rw_lock_free_func (lock=0xa3bd0acc) at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/include/sync0rw.ic:627

#11 0x80d8abc1 in buf_pool_resize () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc:2997

#12 0x80d8bc9f in buf_resize_thread () at /home/buildbot/buildbot/build/mariadb-10.3.8/storage/innobase/buf/buf0buf.cc:3279

#13 0xb74042b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

#14 0xb714516e in clone () from /lib/i386-linux-gnu/libc.so.6